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if MAX II/V have a similar FPGA architecture why they are still CPLDs?
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Altera designed them to replace their CPLD products and markets them as such.
But it's best if you think about them as a small simple FPGA with integrated flash to hold configuration (and other tidbits if you wish).
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if they have similar architecture, that means that the MAXs have unpredictable propagation times?
i believe that don't have Longer propagation times because they have Multitrack. am i wrong?
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Right on both counts.